diydrones/ardupilot — pull request #770 by ikezue (2014-01-10 06:07:22+00:00)
Title: Enable land detection using optional hardware switch(es)

- User needs to enable use of land switches in ArduCopter/config.h.
- Default is for two active-high switches connected to AN0 and AN1.
- Current behavior is to trigger if either switch is closed.
- Works great with micro (snap action) switches.